You could start receiving unwanted calls now on your cell phone & yes you will be charged for those calls. Also if you registed 5 yrs. ago it is time to renew. However you can prevent this by calling 1-888-382-1222 from the Cell phone you are wanting to activate. This will keep your Cell number blocked from telemarketers, but not politicians from contacting you. To block Political calls register by going to www.stoppoliticalcalls.org National Do Not Call Registry web site is www.donotcall.gov